Leak stop questions?
Leak stop questions? I am losing coolant when I go WOT, but I don't have any coolant in the oil and my coolant temp remains normal. I think I may have a leak in my head gasket and a friend at work suggested that I use leak stop.
He said that he always puts leak stop in any engine that he rebuilds because the head gaskets are not always perfect and leak stop helps with that.
Any prior expierence with leak stop or comments will be greatly appreciated.
He said that he always puts leak stop in any engine that he rebuilds because the head gaskets are not always perfect and leak stop helps with that.
Any prior expierence with leak stop or comments will be greatly appreciated.
I would test for exhaust gas in the coolant with a chemical detection kit to find out if there is a head gasket leak.
One takes a coolant sample with the engine idling and mixes it with the test compound. If the color changed one has an exhaust leak into the coolant.
They say the chemical test is about 90% accurate in catching head gasket leaks.
Lisle has one.
NAPA has a kit for this too.
Also 4th Gen's have radiators with plastic sides that are crimped onto the radiator center core. One of my friends discovered his radiator was leaking and it wasn't obvious.
Radiator cap and over flow are also good to check.
Heater core and radiator hoses as well.
I would find out what's going on before adding Stop Leak.
One takes a coolant sample with the engine idling and mixes it with the test compound. If the color changed one has an exhaust leak into the coolant.
They say the chemical test is about 90% accurate in catching head gasket leaks.
Lisle has one.
NAPA has a kit for this too.
Also 4th Gen's have radiators with plastic sides that are crimped onto the radiator center core. One of my friends discovered his radiator was leaking and it wasn't obvious.
Radiator cap and over flow are also good to check.
Heater core and radiator hoses as well.
I would find out what's going on before adding Stop Leak.
The thing is, I only lose coolant when I go wide open throttle. Any other time I drive the car normally I don't lose any coolant.
I have heard of testing for exhaust gas in the coolant, which I plan on doing soon.
Thanks,
Curtis
I have heard of testing for exhaust gas in the coolant, which I plan on doing soon.
Thanks,
Curtis
TECH Addict
Joined: Mar 2013
Posts: 2,628
Likes: 30
I got news for all of you, NO GM CAR leaves the factory without a few stop leak pills.........I use them in mine for 20 years. Using them with clean coolant and following instructions for use will not clog anything. I use the Bars Leak gold powder in all my engines. Aluminum engines are prone to leaks much more than cast iron engines because of porosity in the castings and aluminum moves around more than cast iron as it heats and cools. USE IT.
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White smoke? If you pull the plugs and it is getting into a cylinder you will have a really clean plug at the offending cylinder.
I have seen something similar before, leak at WOT only. It was the radiator "yawning" due to increased water pump pressure. I also had another car that leaked and I could never find it. Turned out to be the thermostat gasket. Only reason I found it was a headlight went out and when I got home to change it I could detect a faint coolant smell. It was leaking and then burning off so I never saw any puddling.
I have seen something similar before, leak at WOT only. It was the radiator "yawning" due to increased water pump pressure. I also had another car that leaked and I could never find it. Turned out to be the thermostat gasket. Only reason I found it was a headlight went out and when I got home to change it I could detect a faint coolant smell. It was leaking and then burning off so I never saw any puddling.
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